| 摘要 |
PURPOSE: A control method of an electronic expansion valve for an air conditioner is provided to improve the stability of the system by controlling the opening degree of the electronic expansion valve quickly in starting a compressor early and controlling the opening degree of the electronic expansion valve slowly after stabilizing the system. CONSTITUTION: An electronic expansion valve is initialized(10), and the opening degree of the electronic expansion valve is initialized according to frequency of two compressors by transmitting the signals to two compressors(20,30). Two compressors are operated, and the electronic expansion valve is controlled for three minutes in starting by the opening degree equation and three minutes later by the opening degree equation(40,50,60). Two compressors are stopped(70), and the electronic expansion valve is opened(80). One compressor is stopped, and the other compressor is operated continuously(71). The opening degree of the electronic expansion valve is initialized with the frequency of 170 pulse(81). The electronic expansion valve is controlled for three minutes by the opening degree equation and three minutes later by the opening degree equation(90,100). The operating compressor is stopped, and the electronic expansion valve is initialized(110,120).
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